GPIO set pull up mode for INPUT?

I am curious because I don't see it mentioned anywhere in the documentation but is there a way to have an input GPIO set up in pull up mode so you just need to ground it to change state. It means all buttons can be connected to earth and don't need to have any power running through them.

the gpioctl programs is exceptionally basic and does not seem to document any thing much but it does show

@T-NT I hear you. Having internal pull-ups/pull-downs is handy. But there's not much one can do about it. Just remember not to use pull-ups/pull-downs on the bootstrap-pins or the Omega2 may not be able to boot.

A thought I just had. Not best practice I know but suppose I wire up the common pin to the switches to 3.3v and had the GPIO pin default HIGH and when the button is pressed it would go LOW triggering an event. Is there any real reason I could not use 3.3V on these switches or a rotary encoder?